<template>
	<view>
	<view class="search-box">
		<uni-search-bar @input="input" :radius="100" cancelButton="none"></uni-search-bar>
	</view>
	<!-- 搜索结果列表 -->
	<view class="sugg-list">
		<view class="sugg-item"
				v-for="(item,index) in searchResults"
				:key="index"
				@click="gotoDetail(item.goods_id)">
			<view class="goods-name">
				{{item.goods_name}}
			</view>
			<uni-icons type="arrowright" size="16"></uni-icons>
		</view>
	</view>
	<!-- 搜索历史 -->
	<view class="history-box">
		<!-- 标题区域 -->
		<view class="history-title">
			<text>搜索历史</text>
			<view v-if="!isShowClear">
				<uni-icons type="trash" size="17" @click="isShowClear = true"></uni-icons>
			</view>
			<view v-else>
				<text class="txt" @click="onClearAll">全部删除</text>
				<text class="txt" @click="isShowClear = false">取消</text>
			</view>
		</view>
		<!-- 列表区域 -->
		<view class="history-list">
			<block v-for="(item,index) in historyList" :key="index">
				<view class="history-item" @click="onHistoryItemClick(item,index)">
					<text class="history-txt">{{ item }}</text>
				</view>
			</block>
		</view>
	</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				//延时器timeId
				timer: null,
				kw: '', //搜索关键字
				searchResults:[], // 搜索结果
				isShowClear: false,
				//搜索关键词的历史纪录
				historyList:[]
			};
		},
		computed:{
			history(){
				return [...this.historyList].reverse()
			}
		},
		onLoad(){
			this.historyList = JSON.parse(uni.getStorageSync('kw') || '[]')
		},
		methods: {
			input(e){
				//清除延时器
				clearTimeout(this.timer)
				//重新启动一个延时器，并把timerId赋值给this.timer
				this.timer = setTimeout(() => {
					this.kw = e
					// console.log(this.kw);
					this.getSearchList()
				},500)
			},
			async getSearchList(){
				if(this.kw === ''){
					this.searchResults = []
					return
				}
				const { data: res } = await uni.$http.get('/api/public/v1/goods/qsearch', {query: this.kw})
				if(res.meta.status !== 200) return uni.$showMsg()
				console.log(res);
				this.searchResults = res.message
				//查询到搜索结果之后，保存搜索关键词
				this.seaveSearchHistory()
			},
			gotoDetail(goods_id){
				uni.navigateTo({
					url:`/subpkg/goods_detail/goods_detail?goods_id=${goods_id}`
				})
			},
			onClearAll(){
				uni.showModal({
					title:'提示',
					content:'是否删除历史记录',
					showCancel:true,
					success: ( { confirm,cancel }) =>{
						if(confirm) {
							this.historyList = []
							this.isShowClear = false
							uni.removeStorageSync('kw')
						}
					}
				})
			},
			onHistoryItemClick(item,index) {
				if(this.isShowClear){
					this.historyList.splice(index,1)
				}
			},
			seveSearchHistory(){
				const set = new Set(this.historyList)
				set.delete(this.kw)
				set.add(this.kw)
				this.historyList = Array.from(set)
				uni.setStorageSync('kw',JSON.stringify(this.historyList))
			},
			gotoGoodsList(item){
				uni.navigateTo({
					url:`/subpkg/goods_list/goods_list?query=${item}`
				})
			}
		}
	}
</script>

<style lang="scss">
.search-box{
	position: sticky;
	top: 0;
	z-index: 999;
}
.sugg-list{
	padding: 0 5px;
	
	.sugg-item{
		font-size: 12px;
		padding: 13px 0;
		border-bottom: 1px solid #efefef;
		display: flex;
		align-items: center;
		justify-content: space-between;
		.goods-name{
			white-space: nowrap;
			overflow: hidden;
			text-overflow: ellipsis;
			margin-right: 3px;
		}
	}
}
.history-box{
	padding: 0 5px;
	.history-title{
		display: flex;
		justify-content: space-between;
		align-items: center;
		height: 40px;
		font-size: 13px;
		border-bottom: 1px solid #efefef;
		.txt{
			font-size: 12px;
			padding: 5px;
		}
	}
	.history-list{
		display: flex;
		flex-wrap: wrap;
		.history-item{
			box-sizing: border-box;
			display: inline-block;
			padding: 12px;
			position: relative;
			.history-txt{
				display: inline-block;
				font-size: 12px;
			}
		}
	}
}
</style>
